Patents by Inventor Siu Wai Hui
Siu Wai Hui has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 8365347Abstract: A floor cleaning device including a base assembly for movement along a surface, a handle, a nozzle, a nozzle lifting mechanism, a brush, a brush lifting mechanism, a recovery tank, and a liquid distribution system. The nozzle lifting mechanism moving the nozzle relative to the base assembly and the surface and the brush lifting mechanism moving the brush relative to the base assembly and the surface.Type: GrantFiled: August 18, 2011Date of Patent: February 5, 2013Assignee: Techtronic Floor Care Technology LimitedInventors: Jeffery A. Morgan, David A. Bradshaw, Douglas E. Gerber, Charles A. Lang, Adam C. Sclafani, Kevin L. Thomas, Vincent L. Weber, Robert S. Wilson, Siu Wai Hui, Wing Leung Ng
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Publication number: 20110302731Abstract: A floor cleaning device including a base assembly for movement along a surface, a handle, a nozzle, a nozzle lifting mechanism, a brush, a brush lifting mechanism, a recovery tank, and a liquid distribution system. The nozzle lifting mechanism moving the nozzle relative to the base assembly and the surface and the brush lifting mechanism moving the brush relative to the base assembly and the surface.Type: ApplicationFiled: August 18, 2011Publication date: December 15, 2011Inventors: Jeffery A. Morgan, David A. Bradshaw, Douglas E. Gerber, Charles A. Lang, Adam C. Sclafani, Kevin L. Thomas, Vincent L. Weber, Robert S. Wilson, Siu Wai Hui, Wing Leung Ng
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Publication number: 20100005613Abstract: A floor cleaning device comprises a base portion for movement along a surface and a handle portion pivotally connected to the base. The base portion further includes a suction nozzle and a brush assembly for agitating the surface, wherein the brush assembly and the nozzle assembly are in a first position raised off of the surface for vacuuming saw the surface, and the nozzle assembly is lowered to a second position contacting the surface for collecting and picking up liquid and dirt from the surface. A method of cleaning a surface by first dry vacuuming the surface using a cleaning unit in which the nozzle assembly is raised to pick up particles and then wet vacuuming the floor with the nozzle assembly lowered to collect and pick up dirt from the floor mixed with cleaning solution distributed on the floor.Type: ApplicationFiled: May 18, 2009Publication date: January 14, 2010Inventors: Jeffery A. Morgan, David A. Bradshaw, Douglas E. Gerber, Charles A. Lang, Adam C. Sclafani, Kevin L. Thomas, Vincent L. Weber, Robert S. Wilson, Siu Wai Hui, Wing Leung Ng
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Patent number: 7533442Abstract: A floor cleaning device comprises a base portion for movement along a surface and a handle portion pivotally connected to the base. The base portion further includes a suction nozzle and a brush assembly for agitating the surface, wherein the brush assembly and the nozzle assembly are in a first position raised off of the surface for vacuuming the surface, and the nozzle assembly is lowered to a second position contacting the surface for collecting and picking up liquid and dirt from the surface. A method of cleaning a surface by first dry vacuuming the surface using a cleaning unit in which the nozzle assembly is raised to pick up particles and then wet vacuuming the floor with the nozzle assembly lowered to collect and pick up dirt from the floor mixed with cleaning solution distributed on the floor.Type: GrantFiled: September 28, 2004Date of Patent: May 19, 2009Assignee: Healthy Gain Investments LimitedInventors: Jeffery A. Morgan, David A. Bradshaw, Douglas E. Gerber, Charles A. Lang, Adam C. Sclafani, Kevin L. Thomas, Vincent L. Weber, Robert S. Wilson, Siu Wai Hui, Wing Leung Ng
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Patent number: 7178196Abstract: A floor care appliance is provided. The floor care appliance includes a base for movement along the surface attached to a housing. The floor care appliance has two liquid storage tanks located in the housing wherein one of the liquid storage tanks generally overlies the other liquid storage tank. In the preferred embodiment of the invention, the liquid storage tank located above the other liquid storage tank is a cleaning solution storage tank and the other liquid storage tank is a liquid recovery tank.Type: GrantFiled: January 11, 2005Date of Patent: February 20, 2007Assignee: The Hoover CompanyInventors: Jeffery A. Morgan, Charles A. Lang, Adam C. Sclafani, Kevin L. Thomas, Jeffrey S. Louis, David L. O'Neal, Siu Wai Hui
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Publication number: 20050039297Abstract: A floor cleaning device comprises a base portion for movement along a surface and a handle portion pivotally connected to the base. The base portion further includes a suction nozzle and a brush assembly for agitating the surface, wherein the brush assembly and the nozzle assembly are in a first position raised off of the surface for vacuuming the surface, and the nozzle assembly is lowered to a second position contacting the surface for collecting and picking up liquid and dirt from the surface. A method of cleaning a surface by first dry vacuuming the surface using a cleaning unit in which the nozzle assembly is raised to pick up particles and then wet vacuuming the floor with the nozzle assembly lowered to collect and pick up dirt from the floor mixed with cleaning solution distributed on the floor.Type: ApplicationFiled: September 28, 2004Publication date: February 24, 2005Inventors: Jeffery Morgan, David Bradshaw, Douglas Gerber, Charles Lang, Adam Sclafani, Kevin Thomas, Vincent Weber, Robert Wilson, Siu Wai Hui, Wing Leung Ng
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Patent number: 6842942Abstract: A floor cleaning unit is provided. The floor cleaning unit includes a base for movement along the surface. A nozzle assembly is removably attached to the base for pick up and removal of liquid and dirt. Such attachment is accomplished by providing the nozzle assembly with a slide latch that slidably engages a channel formed in the base.Type: GrantFiled: September 18, 2001Date of Patent: January 18, 2005Assignee: The Hoover CompanyInventors: Jeffery A. Morgan, Charles A. Lang, Adam C. Sclafani, Kevin L. Thomas, Jeffrey S. Louis, David L. O'Neal, Siu Wai Hui
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Patent number: 6832409Abstract: A floor cleaning device comprises a base portion for movement along a surface and a handle portion pivotally connected to the base. The base portion further includes a suction nozzle and a brush assembly for agitating the surface, wherein the brush assembly and the nozzle assembly are in a first position raised off of the surface for vacuuming the surface, and the nozzle assembly is lowered to a second position contacting the surface for collecting and picking up liquid and dirt from the surface. A method of cleaning a surface by first dry vacuuming the surface using a cleaning unit in which the nozzle assembly is raised to pick up particles and then wet vacuuming the floor with the nozzle assembly lowered to collect and pick up dirt from the floor mixed with cleaning solution distributed on the floor.Type: GrantFiled: September 18, 2001Date of Patent: December 21, 2004Assignee: The Hoover CompanyInventors: Jeffery A. Morgan, David A. Bradshaw, Douglas E. Gerber, Charles A. Lang, Adam C. Sclafani, Kevin L. Thomas, Vincent L. Weber, Robert S. Wilson, Siu Wai Hui, Wing Leung Ng
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Patent number: 6647578Abstract: A floor cleaning device includes a main body and a brush assembly for engaging the surface of the floor being cleaned. An actuating member is movably connected to the main body. A latch member is rotatably connected to the main body. An engaging member is attached to the brush assembly. The engaging member is releasably connected to the latch member such that pushing the actuating member rotates the latch member to disengage from the engaging member.Type: GrantFiled: September 18, 2001Date of Patent: November 18, 2003Assignee: The Hoover CompanyInventors: Jeffery A. Morgan, Adam C. Sclafani, Jeffrey S. Louis, David L. O'Neal, Siu Wai Hui
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Publication number: 20030051310Abstract: An improved floor cleaning unit is provided. The floor cleaning unit comprises a base for movement along the surface. A nozzle assembly is removably attached to the base for pick up and removal of liquid and dirt. Such attachment is accomplished by providing the nozzle assembly with a slide latch that slidably engages a channel formed in the base.Type: ApplicationFiled: September 18, 2001Publication date: March 20, 2003Applicant: Hoover CompanyInventors: Jeffery A. Morgan, Charles A. Lang, Adam C. Sclafani, Kevin L. Thomas, Jeffrey S. Louis, David L. O'Neal, Siu Wai Hui
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Publication number: 20030051301Abstract: An improved floor cleaning device comprises a main body and a brush assembly for engaging the surface of the floor being cleaned. An actuating member movably connected to the main body. A latch member rotatably connected to the main body. An engaging member attached to the brush assembly. The engaging member being releasably connected to the latch member such that pushing the actuating member rotates the latch member to disengage from the engaging member.Type: ApplicationFiled: September 18, 2001Publication date: March 20, 2003Applicant: The Hoover CompanyInventors: Jeffery A. Morgan, Adam C. Sclafani, Jeffrey S. Louis, David L. O'Neal, Siu Wai Hui
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Publication number: 20030051309Abstract: An improved floor cleaning device comprises a base portion for movement along a surface and a handle portion pivotally connected to the base. The base portion further includes a suction nozzle and a brush assembly for agitating the surface, wherein the brush assembly and the nozzle assembly are in a first position raised off of the surface for vacuuming said surface, and the nozzle assembly is lowered to a second position contacting the surface for collecting and picking up liquid and dirt from the surface. A method of cleaning a surface by first dry vacuuming the surface using a cleaning unit in which the nozzle assembly is raised to pick up particles and then wet vacuuming the floor with the nozzle assembly lowered to collect and pick up dirt from the floor mixed with cleaning solution distributed on the floor.Type: ApplicationFiled: September 18, 2001Publication date: March 20, 2003Applicant: The Hoover CompanyInventors: Jeffery A. Morgan, David A. Bradshaw, Douglas E. Gerber, Charles A. Lang, Adam C. Sclafani, Kevin L. Thomas, Vincent L. Weber, Robert S. Wilson, Siu Wai Hui, Wing Leung Ng